Forces in a bridge-truss.

• Jun 2nd 2009, 08:46 AM
EastEnder905
Forces in a bridge-truss.
I am hoping that I posted this in the correct section, if not can a mod/admin move it to the correct location.

I am having trouble with this question and looking through my textbook there seems to be many very similar to it so I am hoping if someone can answer this one for me and show me how they got it, I can use that to figure the rest myself.

Q: In the bridge-truss joint shown below, the forces acting on the members form a concurrent force system. Knowing that the joint is in equilibrium, determine the forces C and T.(Assume that the bottom of the truss is at a straight 180 degrees)
http://img517.imageshack.us/img517/5084/330.png
• Jun 3rd 2009, 03:39 AM
CaptainBlack
Quote:

Originally Posted by EastEnder905
I am hoping that I posted this in the correct section, if not can a mod/admin move it to the correct location.

I am having trouble with this question and looking through my textbook there seems to be many very similar to it so I am hoping if someone can answer this one for me and show me how they got it, I can use that to figure the rest myself.

Q: In the bridge-truss joint shown below, the forces acting on the members form a concurrent force system. Knowing that the joint is in equilibrium, determine the forces C and T.(Assume that the bottom of the truss is at a straight 180 degrees)
http://img517.imageshack.us/img517/5084/330.png

You resolve the forces along x and y and set the sum of forces in each direction to zero. This will give you a pair of simultaneous equations in the two unknown forces which you can then solve.

CB
• Aug 6th 2012, 06:34 PM
louisejane
Re: Forces in a bridge-truss.
Quote:

Originally Posted by CaptainBlack
You resolve the forces along x and y and set the sum of forces in each direction to zero. This will give you a pair of simultaneous equations in the two unknown forces which you can then solve.

CB

I agree on this. Can't have something to write for you provide it all.

_____________
walking bridges
• Aug 26th 2012, 09:26 PM
katewatson
Re: Forces in a bridge-truss.
Credits for that CaptainBlack, I'm really slow in math but I'll try solving EastEnder905's problem by the help of your idea.
• Aug 26th 2012, 09:34 PM
MaxJasper
Re: Forces in a bridge-truss.
Which truss? no picture attached!
• Aug 26th 2012, 09:36 PM
louisejane
Re: Forces in a bridge-truss.
Give it a try. You can make it if you are eager and motivated.